Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
transfer sector » transfer factor, transport sector, transfer factors
developpement l » developpement il, developpement la, developpement de
sector lack » sector labor, sector loans, sector local
lack space » slack space, place space, blank spaces
space 3.2 » space 2.1
l afrique » en afrique

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology transfer sector lack space 3.2 communication costs _ developpement l afrique.*.